Hamilton
Broadway H43311735— lug 18mm

The lug width of the Hamilton Broadway H43311735 is 18mm. This measurement represents the optimal balance between the 40mm case proportion and secure wrist attachment. To verify strap compatibility, measure the internal space between the two lug pins: it must match exactly 18mm.

For the H43311735, we recommend a strap in vegetable-tanned alligator in black for maximum formality, or dark brown shell cordovan for a more versatile and durable solution (10-15 year lifespan). Both materials enhance the minimalist design of the black dial and satined steel case. NATO fabric straps represent a contemporary alternative for those wishing to transform the watch into a more casual instrument.

To change the strap, position the watch with the lug facing you. Use a springbar tool (specific tool for lug springs) to gently push the internal pin of the lug, freeing the old strap. Insert the new strap by aligning the holes with the lug pins and release the spring. This operation requires precision to avoid scratching the case: we recommend having a professional watchmaker perform it.

Absolutely. The H43311735 is fully compatible with quality 18mm aftermarket straps, provided they are manufactured with correct tolerance in hole measurements. We recommend choosing artisanal straps that respect construction standards: vegetable-tanned alligator, cordovan, tanned calf, or technical fabrics. A quality aftermarket strap can actually improve both aesthetic and functional experience compared to the original strap.

Durability depends on material and usage. A vegetable-tanned alligator strap lasts 5-8 years with regular maintenance (cleaning, drying, protection from direct light). Shell cordovan is significantly more resistant: 10-15 years. Tanned calf settles at 6-10 years. A finer calf strap lasts less, but develops a richer patina. The natural aging of leather is not a defect, but an aesthetic characteristic appreciated by connoisseurs.